Visual guides
A public IP is visible from the internet. A private IP works inside your local network and usually reaches the internet through NAT.
Addresses like 192.168.x.x, 10.x.x.x or 172.16-31.x.x live inside internal networks.
The address visible to external sites and diagnostic tools.
The router translates many private connections into one shared public exit.
Your phone or computer can have a private Wi-Fi IP while a website sees the public IP of the router or VPN.
This is normal and lets many devices share one internet exit.
When a service blocks connections, the important address is usually the public IP. For internal issues, the private IP and local configuration matter.
FAQ
Not directly. Private IPs are not routable from the public internet.
It reduces direct exposure, but it does not replace firewall rules, patching or good network design.